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Matrix operations

Name: Anonymous 2008-09-15 18:19

def matrix_add(matrix1, matrix2):
    return [[el1 + el2 for el1, el2 in zip(row1, row2)] for row1, row2 in zip(matrix1, matrix2)]

def matrix_transpose(matrix):
    return list(zip(*matrix))

def matrix_multiply(matrix1, matrix2):
    matrix2_transposed = matrix_transpose(matrix2)
    return [[sum(x*y for x, y in zip(row, col)) for col in matrix2_transposed] for row in matrix1]

I would like to do these more elegantly and/or more efficiently. Any Haskellfags present?

Name: Anonymous 2008-09-15 18:50

row1, row2, fight the powah

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